sof Equations and Inequalities with held questions: now vewng the questons you held earller. Please submit on onswer or pass. The marching band is selling candy bars and fruit snacks for a fundraiser. Candy bars are sold for \( \$ 2.50 \) and fruit snacks are \( \$ 1.50 \). A total of 650 items were sold, bringing in \( \$ 1,195 \). How many candy bars were sold?

(a) Work out:

ily task 10.1: Classwork/Homework/Data-interpretation e the above of the electromagnetic spectrum to answer the following questions. Which type of EM radiation has the: Longest wavelength? Shortest wavelength? Highest energy? Lowest frequency? Give one word for each of the following descriptions. The type of radiation that can travel through flesh, but not through bones. It therefore casts a shadow of bones. The type of radiation that causes the skin to become brown. Visible light with the longest wavelength. Use the wave equation \( v=\mathrm{f} \lambda \) to answer the following questions. Calculate the highest frequency that radio waves can have. Calculate the lowest frequency that gamma rays can have. ( \( 1 \mathrm{~nm}=1 \times 10^{-9} \mathrm{~m} \) ) What is the main difference between radio waves and gamma rays? Radio waves tend to move around objects, while gamma rays tend to move through objects. Give a possible explanation for this phenomenon. What frequencies of light are visible to the human eye? ( \( 1 \mathrm{~nm}=1 \times 10^{-9} \mathrm{~m} \) ) Calculate the highest energy associated with X rays.

Considere la matriz \( A=\left(\begin{array}{ccc}-10 & 5 & -1 \\ -2 & -5 & -1 \\ 3 & -1 & -1\end{array}\right) \). Obtenga la matriz adjunta de \( A \)

5. ข้อใดคือเซตแบบบอกเงื่อนไขของ \( \{\ldots,-2,-1,0,1,2 \), \( \begin{aligned}\text { 3, } \ldots\} & \\ \text { ก. }\left\{x \mid x \in \mathbb{Z}^{+}\right\} & \text {ค. }\{x \mid x \in N\} \\ \text { 6. }\{x \mid x \in \mathbb{Z}\} & \text { ง. }\{x \mid x \in R\}\end{aligned} \)

5. พิจารณาข้อความต่อไปนี้ \( \begin{array}{ll}\text { 1) } \phi \in\{\phi\} & \\ \text { 2) ถ้า } A=\{-1,0,1\} \text { แล้ว }\{1\} \in P(A) & \\ \text { ข้อใดต่อไปนี้กล่าวถูกต้อง } & \text { ข. ข้อ (1) ถูกเพียงข้อเดียว } \\ \text { ก. ถูกทั้งสองข้อ } & \text { ง. ผิดทั้งสองข้อ }\end{array} \)